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🔥 Want to strengthen your core JavaScript skills and master ES6? I would personally recommend this awesome ES6 course by Wes Bos. You might also like his React course.Parse a query string into an object. Leading ? or # are ignored, so you can pass location.search or location.hash directly.

Objection.js is an ORM for Node.js that aims to stay out of your way and make it as easy as possible to use the full power of SQL and the underlying database engine while keeping magic to a minimum.Objection.js is built on an SQL query builder called knex. All databases supported by knex are supported by objection.js. SQLite3, Postgres and MySQL are thoroughly tested.

sql.js is a port of SQLite to JavaScript, by compiling the SQLite C code with Emscripten. It uses a virtual database file stored in memory, and thus doesn't persist the changes made to the database. However, it allows you to import any existing sqlite file, and to export the created database as a javascript typed array. There is no C bindings or node-gyp compilation here, sql.js is a simple javascript file, that can be used like any traditional javascript library. If you are building a native application in javascript (using Electron for instance), or are working in node.js, you will likely prefer to use a native binding of SQLite to javascript.

Qwery is a modern selector engine built on top of querySelectorAll giving you practical utility. As of version 4.0, qwery no longer supports IE6 - IE8. If your application still requires this level of support, please see the final 3.x release.

This is a tiny language and an engine for selecting specific parts of a JS object, hiding/masking the rest.The main difference between JSONPath / JSONSelect and this engine is that JSON Mask preserves the structure of the original input object. Instead of returning an array of selected sub-elements (e.g. [{a: 1}, {z: 1}] from example above), it filters-out the parts of the object that you don't need, keeping the structure unchanged: {p: {a: 1}, z: 1}.

Knex.js is a "batteries included" SQL query builder for Postgres, MSSQL, MySQL, MariaDB, SQLite3, and Oracle designed to be flexible, portable, and fun to use. It features both traditional node style callbacks as well as a promise interface for cleaner async flow control, a stream interface, full featured query and schema builders, transaction support (with savepoints), connection pooling and standardized responses between different query clients and dialects.

Cascalog is a fully-featured data processing and querying library for Clojure or Java. The main use cases for Cascalog are processing "Big Data" on top of Hadoop or doing analysis on your local computer. Cascalog is a replacement for tools like Pig, Hive, and Cascading and operates at a significantly higher level of abstraction than those tools.

Provides a simple, MongoDB-inspired query language that accomplishes the same thing as the map/reduce API, but with far less code. Eventually this will replace PouchDB's map/reduce API entirely. You'll still be able to use map/reduce, but it will be distributed as a separate plugin.

Generate API middleware from a RAML definition, which can be used locally or globally for validating API requests and responses. Osprey can be used as a validation proxy with any other API server. Just install the module globally and use the CLI to set up the application endpoint(s) to proxy, as well as the RAML definition to use. Invalid API requests will be blocked before they reach your application server.

NQuery is a relational query engine written in C#. It allows you to execute a SELECT query against .NET objects. It can use arrays, data sets, data tables or any other custom table binding. NQuery is completely extensible so that you can add custom functions, aggregates, const...

vsXPathTester is a utility for Developer. This help them load XML file and the run their XPath Query. The Resultant is shown in window. It save the Successfully Run XPath for the current session as well.